The 302s are swirl port closed chamber heads. If they are not cracked, they are some good heads. They have the 318 intake port size which will need the 318 port size intake but because of the velocity, that will not slow down a 340 or 360 with those heads. A stroker would probably benefit from them being ported to the 340-360 port size, but I would be careful because you don't wanna booger up the swirl port effect.